Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sertraline Delivered in Phosphatidylserine Liposomes Is Effective in an Experimental Model of Visceral Leishmaniasis

Full text
Romanelli, Maiara Maria [1] ; da Costa-Silva, Thais Alves [1] ; Cunha-Junior, Edezio [2] ; Dias Ferreira, Daiane [1] ; Guerra, Juliana M. [3] ; Galisteo, Jr., Andres Jimenez [4] ; Pinto, Erika Gracielle [5] ; Barbosa, Leandro R. S. [6] ; Torres-Santos, Eduardo Caio [2] ; Tempone, Andre Gustavo [1]
Total Authors: 10
[1] Adolfo Lutz Inst, Ctr Parasitol & Mycol, Sao Paulo - Brazil
[2] Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Lab Bioquim Tripanosomatideos, Pavilhao Leonidas Deane, Rio De Janeiro - Brazil
[3] Adolfo Lutz Inst, Ctr Pathol, Sao Paulo - Brazil
[4] Univ Sao Paulo, Hosp Clin HCFMUSP, Fac Med, Sao Paulo - Brazil
[5] Univ Dundee, Drug Discovery Unit, Life Sci, Dundee - Scotland
[6] Univ Sao Paulo, Inst Fis, Cidade Univ, Sao Paulo - Brazil
Total Affiliations: 6
Document type: Journal article
Web of Science Citations: 0

Liposomes containing phosphatidylserine (PS) has been used for the delivery of drugs into the intramacrophage milieu. Leishmania (L.) infantum parasites live inside macrophages and cause a fatal and neglected viscerotropic disease, with a toxic treatment. Sertraline was studied as a free formulation (SERT) and also entrapped into phosphatidylserine liposomes (LP-SERT) against intracellular amastigotes and in a murine model of visceral leishmaniasis. LP-SERT showed a potent activity against intracellular amastigotes with an EC50 value of 2.5 mu M. The in vivo efficacy of SERT demonstrated a therapeutic failure. However, when entrapped into negatively charged liposomes (-58 mV) of 125 nm, it significantly reduced the parasite burden in the mice liver by 89% at 1 mg/kg, reducing the serum levels of the cytokine IL-6 and upregulating the levels of the chemokine MCP-1. Histopathological studies demonstrated the presence of an inflammatory infiltrate with the development of granulomas in the liver, suggesting the resolution of the infection in the treated group. Delivery studies showed fluorescent-labeled LP-SERT in the liver and spleen of mice even after 48 h of administration. This study demonstrates the efficacy of PS liposomes containing sertraline in experimental VL. Considering the urgent need for VL treatments, the repurposing approach of SERT could be a promising alternative. (AU)

FAPESP's process: 18/10279-6 - Selection and Optimization of New Drug Candidates for Leishmaniasis and Chagas Disease
Grantee:André Gustavo Tempone Cardoso
Support type: Regular Research Grants
FAPESP's process: 15/15822-1 - Physicochemical and structural properties of Ionic Liquids and drugs interacting with biologicaly relevant systems.
Grantee:Leandro Ramos Souza Barbosa
Support type: Regular Research Grants
FAPESP's process: 13/07275-5 - In vitro study of cellular immune response against synthetic drugs with antileishmanial activities
Grantee:Thaís Alves da Costa Silva
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/23403-9 - Rational Pre-Clinical Study of New Drug Candidates Against Neglected Protozoan Diseases Using Pharmacokinetic Approaches
Grantee:André Gustavo Tempone Cardoso
Support type: Regular Research Grants